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<?php var_dump((new \DateTimeImmutable())->setTimestamp(-100));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ugjl7
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        NEW                                              $0      'DateTimeImmutable'
          2        DO_FCALL                                      0          
          3        INIT_METHOD_CALL                                         $0, 'setTimestamp'
          4        SEND_VAL_EX                                              -100
          5        DO_FCALL                                      0  $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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